US3816930A - Coordinate measuring machine - Google Patents

Coordinate measuring machine Download PDF

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Publication number
US3816930A
US3816930A US00212166A US21216671A US3816930A US 3816930 A US3816930 A US 3816930A US 00212166 A US00212166 A US 00212166A US 21216671 A US21216671 A US 21216671A US 3816930 A US3816930 A US 3816930A
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US
United States
Prior art keywords
guide bar
supporting table
measuring machine
coordinate
coordinate measuring
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00212166A
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English (en)
Inventor
B Edenholm
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JOHANSSON C AB
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JOHANSSON C AB
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Filing date
Publication date
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Publication of US3816930A publication Critical patent/US3816930A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/004—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points
    • G01B5/008—Measuring arrangements characterised by the use of mechanical techniques for measuring coordinates of points using coordinate measuring machines
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
    • G01B5/0009—Guiding surfaces; Arrangements compensating for non-linearity there-of

Definitions

  • ABSTRACT A coordinate measuring machine comprises a supports 1 a l I u s I I 1 l l s e s 'l i 4 TA 189 nate directions, and a localization means, such as a l 0 care 26g/20j308/5 6 measuring microscope, substantially stationary in the horizontal plane.
  • This invention relates to a coordinate measuring machine used, for example, for measuring engineering products, production tools and the like, comprising a supporting table movable in two horizontal coordinate directions for an object to be measured, a foundation for the supporting table, and a localization means substantially stationary in the horizontal plane, for example a measuring microscope for determining the position of points, surfaces, edges or the like on the object to be measured.
  • Known coordinate measuring machines of this kind usually are provided with two tables of slide-type or the like, which are placed one above the other on a foundation and movable in mutually perpendicular coordinate directions relative to the foundation, the upper table being intended for placing thereon an object to be measured.
  • the measuring operation it takes considerable time to effect the movement of the slide-type tables, and the work additionally is rendered more difficult by the necessary change of the eye position.
  • the coordinate measuring machine which is characterized in that the supporting table is aircushioned in a horizontal plane on the foundation and controlled without play by a first guide bar adapted to move in parallel in one of the coordinate directions, one end of said bar being free and the other end provided with a head or the like, which by a second guide bar provided at the foundation in the other coordinate direction is controlled without play in such a way, that the first guide bar is adapted to move in parallel and to slightly pivot upwards about the center line of the sec ond guide bar, and that the supporting table manually and even with substantial load by an object to be measured can be quick'adjusted simultaneously in the two coordinate directions.
  • the air-cushioning of the supporting table renders the table easily movable relative to the foundation, and the above-mentioned guide system renders the supporting table vertically movable to such an extent as is necessary for the table, in connection with the air-cushioning, to be self-adjusting in vertical direction.
  • the supporting table advantageously is slightly rotatable about the first guide bar.
  • the possibility of quick-adjusting the supporting table at a coordinate measuring machine according to the invention results in a substantial time gain at the measuring operation, and further in the possibility of fixing the position of tee localization means, so that the measuring person can sit still during the measuring operation and need not change the eye position.
  • the time gain at the measuring work is a.o. due to the possibility of utilizing the shortest possible movement distance for the object to be measured during the measuring operation.
  • the absence of contact between the foundation and the supporting table durwhich by its dimension stability is an extremely advantageous material for the foundation.
  • FIG. 1 shows a front view of a coordinate measuring machine according to the invention
  • FIG. 2 shows a lateral view of the coordinate measuring machine according to FIG. 1,
  • FIG. 3 shows by a view from above and on an enlarged scale the foundation with the supporting table, guide bars and head,
  • FIG. 3a illustrates a coordinate measuring machine in which the head is rigidly connected to the second guide bar, and said guide bar is slideable in its horizontal direction, without play, relative to securing means on the foundation;
  • FIG. 4 shows a section along the line 4-4 in FIG. 3,
  • FIG. 5 shows by a view from below the supporting table and part of the guide bar coacting therewith.
  • 1 is a working table, on which is mounted the foundation 2 of diabase for the coordinate measuring machine, said foundation having a horizontal plane 3 constituting the reference and control plane.
  • the supporting table 4 On said plane 3 rests the supporting table 4 on the paws 5, which in a manner known per se are air-cushioned on the plane 3 by compressed air, which through holes is supplied to grooves (not shown) in the lower surface of the paws.
  • On the upper surface of the supporting table a supporting plane 6 for an object to be measured is mounted.
  • table I there is provided a column 7 with a vertically liftable and lowerable holder 8 for a measuring microscope (not shown) or the like for determining the position of different points, surfaces, edges etc. on the object to be mea sured.
  • the supporting table 4 is provided with a handle ing the movement of the latter, the blow-cleaning effect
  • the supporting table 4 is by sleeve-like aircushionings 10 known per se displaceable without play along a first guide bar 11 of parallel movability, one end of said bar being free and the other end rigidly con nected with a long and narrow hollow head 12, which has its greatest horizontal dimension perpendicularly to the guide bar 11, and which by sleeve-like aircushionings 13 provided in its walls is mounted movable on a second guide bar 14 intersecting said first guide bar 11 at a right angle, the two ends of said guide bar 14 being rigidly connected in openings in holding members 15 projecting from both sides of the foundation.
  • the two guide bars 11, 14 are on their outside shaped substantially cylindrical.
  • the second guide bar 14 instead is rigidly connected, at x, with the head 12 and is longitudinally movable in air-cushionings 13, which are provided in openings in the holding members 15 projecting from both sides of the foundation.
  • the digital pointer instrument 18 of said device is mounted on a column 19 on the working table 1.
  • an additional contact-free length measuring device not shown) of digital action is provided in the head 12, the digital pointer instrument of which is disposed to the side of the pointer instrument l8.
  • Said length measuring devices and pointer instruments are of a kind known per se.
  • the pointer instruments 18 and 20 mounted on the column 19 on the working table 1 indicate in perpendicular coordinates the position and, respectively, movement of the working table 4.
  • each of said locking means is adapted individually to be actuated either by manually operable members 22 and, respectively, 23 or by pedals 24 and, respectively, 25.
  • Each of the locking means 21 is constructed as an axially slotted ring enclosing the guide bar in question, and provided with compressed air servo, in such a way, that the locking effect is discontinued by compressed air pressure.
  • the locking means 21 are displaceably connected with the supporting table 4 and, respectively, the head 12 and, respectively, the holding members 15 by micrometer screws 36 in parallel with the respective guide bar ll, 14 to enable fine adjustment of the supporting table in the coordinate direction in question.
  • the guide bar 11 coacting with the supporting table is of tubular shape and thereby includes a passageway 26, with which communicates an opening 28 in the wall of the tubular guide bar, which opening is located in the internal cavity 27 of the supporting table.
  • a metal hose 29 is connected to one end of the guide bar 11 .
  • the different hoses for the supply of air to the air bearings of the supporting table and the locking means as well as the electric lines for the length measuring device 16, 17 are mounted.
  • hoses and lines are arranged in the tubular guide bar 14 coacting with the head 12.
  • holes 30 are provided to the lower surface of the paws 5 and holes 31 to the sleeve-shaped bearings 10. Bores, hoses, lines or the like for the supply of compressed air to the holes 30 and 31, however, are not shown in the Figures.
  • the supporting table 4 for example, in coaction with a counter-weight or the like, may be displaceable in relation to the foundation 2 in a nonhorizontal plane and along one or both guide bars 11, 14 in a non-horizontal direction.
  • the coordinate measuring machine according to the invention can be utilized also for polar coordinates, for example in that the end of the guide bar 11 is mounted in a special head attached to the head 12 and rotatable relative thereto according to an angle scale.
  • a coordinate measuring machine for measuring engineering products, production tools and the like, including a supporting table being movable in a first and a second horizontal coordinate direction for supporting an object to be measured;
  • a localization means substantially stationary in the horizontal plane for determining the position of points, surfaces, edges and the like on the object to be measured
  • air-cushion means are provided for supporting said table on said horizontal plane
  • said supporting table being guidedly movable in said first coordinate direction as guided along a first horizontal guide bar having one end free and the other end having a head fixed thereon, said head being guidedly movable in said second coordinate direction as guided by a second horizontal guide bar arranged perpendicular to said first guide bar, said fixed head of said first guide bar being mounted on said second guide bar,
  • said supporting table thereby being manually quickadjustable simultaneously in said two directions.
  • a coordinate measuring machine in which said head is rigidly connected to said second guide bar, and wherein said second guide bar in its longitudinal direction is slidable without play relative to securing means on the foundation.
  • a coordinate measuring machine wherein said head is slidable without play relative to said second guide bar, said second guide bar being rigidly connected to said foundation.
  • a coordinate measuring machine according to claim 1, wherein said supporting table is slightly pivotal about said first guide bar.
  • a coordinate measuring machine characterized in that said head is slightly pivotal relative to the center line of said second guide bar.
  • a coordinate measuring machine characterized in that said foundation is made of real stone such as diabase.
  • a coordinate measuring machine characterized in that each locking means individually can be actuated by a pedal.
  • each of the locking means is constructed as an axially slotted ring enclosing the respective guide bar.
  • a coordinate measuring machine characterized in that the locking means is provided with compressed air servo arranged so as to discontinue by compressed air pressure the locking effect of the locking means.
  • a coordinate measuring machine characterized in that it comprises a manually operable locking means acting between the supporting table and corresponding guide bar and, respectively,
  • said locking means being movably connected to the supporting table and, respectively, bracket means by micrometer screws in parallel with the respective guide bar to render possible fine adjustment of the supporting table in the respective coordinate direction.
  • a coordinate measuring machine characterized in that it comprises a manually operable locking means acting between the supporting table and corresponding guide bar and, respectively, between the head and corresponding guide bar to render possible movement of the supporting table along one guide bar and, respectively, one coordinate direction at a time, said locking means preferably being movably connected to the supporting table and, the head, respectively, by micrometer screws parallel to respective guide bar to render possible fine adjustment of the supporting table in the respective coordinate direction.
  • a coordinate measuring machine for measuring engineering products, production tools and the like comprising a supporting table being movable in a first and a second coordinate direction for supporting an object to be measured, a foundation for the supporting table, and a localization means substantially stationary in the horizontal plane such as a measuring microscope for determining the position of points, surfaces, edges or the like on the object to be measured, said supporting table being air-cushioned on a horizontal plane on said foundation, said supporting table being guidedly movable in said first coordinate direction along a first horizontal guide bar having one end free and the other end comprising a fixed head guidedly movable in said second coordinate direction along a second horizontal guide bar arranged at said foundation, each guide bar being associated with a length measuring device adapted to indicate the position and the movement, respectively, of the supporting table: relative to the guide bar.
  • a coordinate measuring machine characterized in that each length measuring device is arranged'without contact between its stationary and its movable part.
  • a coordinate measuring machine characterized in that at least one of said length measuring devices is located in a cavity in said supporting table.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
US00212166A 1970-12-30 1971-12-27 Coordinate measuring machine Expired - Lifetime US3816930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE17727/70A SE354721B (no) 1970-12-30 1970-12-30

Publications (1)

Publication Number Publication Date
US3816930A true US3816930A (en) 1974-06-18

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Application Number Title Priority Date Filing Date
US00212166A Expired - Lifetime US3816930A (en) 1970-12-30 1971-12-27 Coordinate measuring machine

Country Status (5)

Country Link
US (1) US3816930A (no)
DE (1) DE2165628A1 (no)
GB (1) GB1348175A (no)
IT (1) IT943375B (no)
SE (1) SE354721B (no)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996670A (en) * 1974-08-19 1976-12-14 United Technologies Corporation Protractor with digital readout
EP0018945A1 (fr) * 1979-04-25 1980-11-12 Meseltron S.A. Dispositif pour le contrôle de cales-étalons
US4235019A (en) * 1976-11-20 1980-11-25 Cho Chi L Selfcentered automatic coordinate measuring machine
US4593469A (en) * 1985-05-06 1986-06-10 Autographic Business Forms, Inc. Large scale X-Y plotting table
US4800652A (en) * 1987-09-25 1989-01-31 The Timken Company Machine for measuring generally circular objects in cylindrical coordinates
DE3824188A1 (de) * 1988-07-16 1990-01-18 Heidenhain Gmbh Dr Johannes Gekapselte positionsmesseinrichtung
US5142790A (en) * 1989-05-08 1992-09-01 D.E.A. Digital Electronic Automation Spa Measuring machine provided with hand grip means for displacement of a measurement head of the machine along three axes
US20020023667A1 (en) * 2000-08-31 2002-02-28 Thuan Pham Apparatus and method for cleaning a probe tip
US20030142398A1 (en) * 2000-03-08 2003-07-31 Leblans Marc Jan Rene Microscope suitable for high-throughput screening having an autofocusing apparatus
CN108507480A (zh) * 2018-04-08 2018-09-07 青岛理工大学 一种滑块轴承润滑油膜与摩擦力实时测量装置
CN109405700A (zh) * 2018-12-18 2019-03-01 东风商用车有限公司 一种金属软管安装姿态的检测用具及使用方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2941412A1 (de) * 1979-10-12 1981-04-23 Schneider & Kern, 7119 Niedernhall Messmaschine, insbesondere zur laengenmessung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3064505A (en) * 1961-08-04 1962-11-20 Pierce Wrapping Machine Co Positioning table
US3229373A (en) * 1961-04-24 1966-01-18 Chemcut Corp Apparatus for controlling the position of a machine tool table
US3376764A (en) * 1962-10-15 1968-04-09 Schardt Rudolf Pneumatic positioning table
US3377111A (en) * 1966-02-15 1968-04-09 Optomechanisms Inc Precision coordinate axes table means
US3384970A (en) * 1965-09-22 1968-05-28 Boice Gages Inc Precision coordinates measurement apparatus for gaging and layout operations
US3495519A (en) * 1967-02-01 1970-02-17 Microform Data Systems Xy table

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3229373A (en) * 1961-04-24 1966-01-18 Chemcut Corp Apparatus for controlling the position of a machine tool table
US3064505A (en) * 1961-08-04 1962-11-20 Pierce Wrapping Machine Co Positioning table
US3376764A (en) * 1962-10-15 1968-04-09 Schardt Rudolf Pneumatic positioning table
US3384970A (en) * 1965-09-22 1968-05-28 Boice Gages Inc Precision coordinates measurement apparatus for gaging and layout operations
US3377111A (en) * 1966-02-15 1968-04-09 Optomechanisms Inc Precision coordinate axes table means
US3495519A (en) * 1967-02-01 1970-02-17 Microform Data Systems Xy table

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3996670A (en) * 1974-08-19 1976-12-14 United Technologies Corporation Protractor with digital readout
US4235019A (en) * 1976-11-20 1980-11-25 Cho Chi L Selfcentered automatic coordinate measuring machine
EP0018945A1 (fr) * 1979-04-25 1980-11-12 Meseltron S.A. Dispositif pour le contrôle de cales-étalons
US4593469A (en) * 1985-05-06 1986-06-10 Autographic Business Forms, Inc. Large scale X-Y plotting table
US4800652A (en) * 1987-09-25 1989-01-31 The Timken Company Machine for measuring generally circular objects in cylindrical coordinates
DE3824188A1 (de) * 1988-07-16 1990-01-18 Heidenhain Gmbh Dr Johannes Gekapselte positionsmesseinrichtung
US5142790A (en) * 1989-05-08 1992-09-01 D.E.A. Digital Electronic Automation Spa Measuring machine provided with hand grip means for displacement of a measurement head of the machine along three axes
US20030142398A1 (en) * 2000-03-08 2003-07-31 Leblans Marc Jan Rene Microscope suitable for high-throughput screening having an autofocusing apparatus
US6974938B1 (en) 2000-03-08 2005-12-13 Tibotec Bvba Microscope having a stable autofocusing apparatus
US7016110B2 (en) 2000-03-08 2006-03-21 Tibotec Bvba Microscope suitable for high-throughput screening having an autofocusing apparatus
US20020023667A1 (en) * 2000-08-31 2002-02-28 Thuan Pham Apparatus and method for cleaning a probe tip
CN108507480A (zh) * 2018-04-08 2018-09-07 青岛理工大学 一种滑块轴承润滑油膜与摩擦力实时测量装置
CN109405700A (zh) * 2018-12-18 2019-03-01 东风商用车有限公司 一种金属软管安装姿态的检测用具及使用方法
CN109405700B (zh) * 2018-12-18 2024-03-22 东风商用车有限公司 一种金属软管安装姿态的检测用具及使用方法

Also Published As

Publication number Publication date
DE2165628A1 (de) 1972-07-13
SE354721B (no) 1973-03-19
IT943375B (it) 1973-04-02
GB1348175A (en) 1974-03-13

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